By definition L-Band is 1 to 2 GHz, so the answer depends on which signals you want to receive, how wide is the segment you want to receive and how strong the signals that you want to receive that will answer your question. You only asked about the antenna, but keep in mind that the - antenna gain i...

what signal could i potentially get Potentially every signal strong enough to be received at your location, that can be processed by a SDR dongle due it's limitation in frequency, bandwidth and amplitude, and for which there is software to decode the signal, like e.g. AM, FM, CW, USB, LSB, ADSB. Pl...

There are no digital or analogue Frequencies. Frequencies are often calle "analogue or digital" frequencies, because they are used for transmission of either analogue or digital modulations. A SDR can receive any modulations that is within the tuning/frequency range that they can tune to. The SDR ba...

It depends, - is your coax ok, - has never been mistreated, like bend below the allowable radius, otherwise replace it - are your coax connector still mounted correctly and are not corroded, otherwise cut of the damaged coax section, and/or replace connectors and/or cable as needed, because the cabl...

can it be used for tv?, dab?, analogue radio?, other things? Which frequency ranges did you have in mind, which polarization have the signals you are interested in? Everyone will need a glas ball to anwer your Question, without some information. Another problem is knowing what antenna design the Fl...

OK thanks. I am asking because i saw 75 Ohm and 50 Ohm cables combined for some antenna (Turnstile, Cross Dipole etc.) The 70 Ohm cable is normally used only for phasing purposes when combining the two dipoles, while the feeding cable is 50 Ohm. Check HAM Radio literature, e.g. ARRL antenna handboo...

The antenna begins at the feedpoint = point B directly at the coax in your case. The length of the connector's 'shield' is insignificant and has no impact on the wire's resonance if it has the length of 1/4 and is either mounted on a metal shield as ground plane/counterpoise or you can use 3 or more...

Just combining a feed (horn) and a dish won't make an efficient antenna. Just throwing a dish and a random feedhorn together is unlikely to allow you to come even close to the theoretical gain that a certain dish size could provide, because a feed horn design has to matches the F/D of the dish (http...